Filler Metal Selection
Filler Metal Selection
(OP)
We are welding 1 1/4 Cr 1/2 Mo pipe (SA335 P11) Everything I read tells me to use Low Hydrogen 80 series filler.
Another company started this job using 90 series filler under the theory that stronger is better and it was easier for the Welders to use. I was always taught that you should not use filler metal that is too strong compared to the base metal. The site Engineer wants an explination why we are using lower tensil strength filler. Does anyone have a simple explanation on this
Another company started this job using 90 series filler under the theory that stronger is better and it was easier for the Welders to use. I was always taught that you should not use filler metal that is too strong compared to the base metal. The site Engineer wants an explination why we are using lower tensil strength filler. Does anyone have a simple explanation on this





RE: Filler Metal Selection
Note that the 80 series is also substantially stronger than the P11's minimum requirements.
RE: Filler Metal Selection
RE: Filler Metal Selection